Form Redirects

The action returns redirect(303, …). With the enhance attachment, the JSON envelope is intercepted so you can inspect it before navigating; without it the browser follows the HTTP 303.

The action returns redirect(303, …). With {@attach enhance(...)} the JSON envelope is intercepted so you can inspect it before navigating. Without it, the browser follows the HTTP 303.

With `{@attach enhance(...)}`

The enhance attachment intercepts the redirect envelope; click Follow to navigate

Plain HTML

Plain POST, server returns 303, browser follows the Location header

<script lang="ts">
  import RedirectDemo from './RedirectDemo.svelte';

  let { redirected } = $props<{ redirected: boolean }>();
</script>

{#if redirected}
  <p class="redirect-flash" role="status">Redirected here via HTTP 303 (non-enhanced path).</p>
{/if}

<p>
  The action returns <code>redirect(303, …)</code>. With <code>{'{@attach enhance(...)}'}</code> the JSON envelope is intercepted so you can inspect it before navigating. Without it,
  the browser follows the HTTP 303.
</p>
<h3>With <code>{'{@attach enhance(...)}'}</code></h3>
<RedirectDemo label="The enhance attachment intercepts the redirect envelope; click Follow to navigate" mochi:hydrate />
<h3>Plain HTML</h3>
<RedirectDemo label="Plain POST, server returns 303, browser follows the Location header" />

Styles

<style>
  h3 {
    margin: 1.5rem 0 0.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
  }

  p {
    margin: 0 0 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
  }

  code {
    background: var(--code-bg);
    color: var(--code-accent);
    padding: 0.05rem 0.35rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
  }

  .redirect-flash {
    padding: 0.5rem 0.75rem;
    background: var(--badge-info-bg, #dbeafe);
    color: var(--badge-info-text, #1e40af);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin: 0 0 1rem;
  }
</style>

Form Redirects

With {@attach enhance(...)}

Plain HTML

With `{@attach enhance(...)}`